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Adaptation de maillage pour la simul...

Ecole Polytechnique, Montreal (Canada).

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Adaptation de maillage pour la simulation numerique du tourbillon marginal sur une aile tridimensionnelle.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Adaptation de maillage pour la simulation numerique du tourbillon marginal sur une aile tridimensionnelle./
作者:	Joubarne, Eric.
面頁冊數:	172 p.
附註:	Source: Masters Abstracts International, Volume: 47-01, page: 0395.
Contained By:	Masters Abstracts International47-01.
標題:	Applied Mechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR41564
ISBN:	9780494415641

Adaptation de maillage pour la simulation numerique du tourbillon marginal sur une aile tridimensionnelle.
Joubarne, Eric.

Adaptation de maillage pour la simulation numerique du tourbillon marginal sur une aile tridimensionnelle. - 172 p.

Source: Masters Abstracts International, Volume: 47-01, page: 0395.

Thesis (M.Sc.A.)--Ecole Polytechnique, Montreal (Canada), 2008.

A mesh adaptation procedure is presented to capture vortices in a numerical calculation. The error estimator of the adaptation scheme is based on the Hessian of a scalar field. To make convergence faster toward the analytic solution, a new scalar field is introduced: a transported vorticity. This field is computed as a separate equation in the solver, therefore having no influence on the flow computation. The sum of the original vorticity and the transported vorticity is used to calculate the Hessian. This method allows a better vortex capture farther downstream in the axial direction. To assess the quality of the proposed methodology, a simple test case without any lifting foil is first studied. An analytic vortex is set at the inlet of a rectangular cross-section tunnel and expands downstream. Results obtained with hexahedral elements are compared to results obtained with tetrahedral elements. In a second test case, the analytic vortex is replaced by a hydrofoil from which a tip vortex is created. Numerical velocity profiles are compared with experimental results.

ISBN: 9780494415641Subjects--Topical Terms:

1018410
Applied Mechanics.

Adaptation de maillage pour la simulation numerique du tourbillon marginal sur une aile tridimensionnelle.
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245 1 0 $a Adaptation de maillage pour la simulation numerique du tourbillon marginal sur une aile tridimensionnelle.
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500 $a Source: Masters Abstracts International, Volume: 47-01, page: 0395.
502 $a Thesis (M.Sc.A.)--Ecole Polytechnique, Montreal (Canada), 2008.
520 $a A mesh adaptation procedure is presented to capture vortices in a numerical calculation. The error estimator of the adaptation scheme is based on the Hessian of a scalar field. To make convergence faster toward the analytic solution, a new scalar field is introduced: a transported vorticity. This field is computed as a separate equation in the solver, therefore having no influence on the flow computation. The sum of the original vorticity and the transported vorticity is used to calculate the Hessian. This method allows a better vortex capture farther downstream in the axial direction. To assess the quality of the proposed methodology, a simple test case without any lifting foil is first studied. An analytic vortex is set at the inlet of a rectangular cross-section tunnel and expands downstream. Results obtained with hexahedral elements are compared to results obtained with tetrahedral elements. In a second test case, the analytic vortex is replaced by a hydrofoil from which a tip vortex is created. Numerical velocity profiles are compared with experimental results.
590 $a School code: 1105.
650 4 $a Applied Mechanics. $3 1018410
690 $a 0346
710 2 $a Ecole Polytechnique, Montreal (Canada). $3 1018606
773 0 $t Masters Abstracts International $g 47-01.
790 $a 1105
791 $a M.Sc.A.
792 $a 2008
793 $a French
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR41564